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Evolution Theories, EXAMPLES:
For Lamarck, kangaroos have very…
Evolution Theories
Neo-Darwinism: The evolutionary processes are produce by the changes present in the genetic composition of population
Natural selection acts over certain individuals so that they have more possibilities of producing offspring. 
The adaptation to an environment is produced in the course of time and leaves as a result.
Sexual reproduction increases variation, because it generates new gene conbinations thus, different individuals.
The speciation is a mechanism of formation of new species from population already adapted to the environment
Gradual differentiation between populations caused by mutations produced in an isolated population and in the original
Prolonged isolation can produce organisms so different from the originals that are incapable of reproduciong and leaving fertile offspring
Isolation of a population by geographical barriers that impede that they reproduce with the original population
Mutations as a source of variability. These are inherited changes produced in the genitical material
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EXAMPLES:For Lamarck, kangaroos have very developed legs because they use them a lot.The horns of male deer are very large to use. (https://www.youtube.com/watch?v=4HBdxDBqfHc)
Flaws in theory
It is true that some organs change with use. For example, you can become more muscular if you exercise with your arms, but that does not mean that this characteristic passes to your offspring.
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EXAMPLES: Birch butterfly, this characteristic is defined as the predominant color change as a consequence of environmental change caused by industrial activity.Wisdom teeth may disappear in future generations
(https://www.youtube.com/watch?v=kFYQlHS1ung)
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